/* * Copyright (c) 2007 Apple Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #include <stdlib.h> #include <stdio.h> #include <stdarg.h> #include <limits.h> extern void __chk_fail (void) __attribute__((__noreturn__)); extern int __snprintf_chk (char * __restrict, size_t, int, size_t, const char * __restrict, ...) __DARWIN_LDBL_COMPAT (__snprintf_chk); int __snprintf_chk (char *s, size_t maxlen, int flags, size_t len, const char *format, ...) { va_list arg; int done; if (__builtin_expect (maxlen > len, 0)) __chk_fail (); va_start (arg, format); done = vsnprintf (s, maxlen, format, arg); va_end (arg); return done; }